Norwegian Air is trimming transatlantic capacity from Gatwick to Miami and South America next summer but adding flights to other US destinations.
Long haul network adjustments will see reduced frequency to Buenos Aires to five flights a weekly service, Rio De Janeiro down to three a week and Miami six a week.
At the same time, frequency will rise to San Francisco, Austin, Denver and Tampa.
The budget airline will offer 75,000 extra seats on these specific routes during the summer 2020 schedule from March 29, 2020.
Senior vice president, commercial, Matthew Wood, said: “In line with our business strategy of moving from growth to profitability we are ensuring that we concentrate on key routes across our network where we see strong demand.
“These frequency adjustments ensure that our customers can have more choice when choosing their flights to the US at fares that remain affordable to all.”